fgo uid is your ID, also known as PY code. The checking method is very simple. Open friends, switch to friend search, and you will find your own user ID under the search. If you can’t remember it, you can take a screenshot and save it. .
How to read ID in fgo
Click on the friend function. At the bottom of the friend search page is uid. Each player's uid is different and serves as an identification number. Players can use uid to search and add friends, synchronize data, receive gift packages, etc.